Refrigerating apparatus.



REFRIGEFIATINGl APPARATUS. APPLlCATiON FlLE D LULY 28.1916..

1,276,45o-. i Pa'nmg. 20, ;1918.

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which the following HILTON TIBBETZF-OF DETROIT, MICHIGAN, A SSIGNOR, BY MESNE ASSIGNMENTS, "20

THE Isxo conrm, or

CHICAGO, ILLINOIS, .A CORPORATION OF DELAWARE.

REFRIGERATIN G API'ARATUS.

specification of Letters Patent.

Pat-anten ugeaa'mis.

Application filed July 28, 1916. Serial No. 111,832.

To all 'witam z't may concern:

Be it known that I, MIL'roN Tmnr'rs, a citizen of the United States, and resident of Detroit, Wayne county, State of Michigan, have invented certain new and useful Im-l provements in Refrigerating Apparatus, of

` is a specification.

This invention'relates to refrigerating-apparatus, and particularly to refrigerating apparatus of the compression type.

OneJ of the objects of the invention is to prvide an improved form of expansion coi Another objectof the invention is to provide an expansion coil in which the ice making loops have direct lead from the condensei' to thus use the most effective loops of the coil for ice ma a Other objects of the invention will appear from the following description taken in con- 'nection with the ,drawings which form a part hereof, and in which:

Figure 1 is a front elevation and part' section of a refrigerating apparatus embodyi ing this invention, and

Fig. 2 'is an' elevation view of a slightly different form' of expansionv coil from that shown in'Fig. 1.

Referring to the drawings, 10 lrepresents a refri'gerator of usual form, av' a refrigerating compartment`11 and foo compartments 12. A compressor 13 is mounted on the refrigerator and is driven'by a suitable electric motor 14 as by a belt 15. A condenser 16 shown somewhatdiagrammatically is'connected at'one end to the compressor and at the other end to an expansion valve 17 valve 17 is shown mside the refrigerator compartment 11. A short pipe 18 leads from the inlet side of the compressor to the' to of th va ve 17.l

An expansion or refrigera arranged in the compartment 11, and`in the illustrative form of the invention shown in e compartment 11 adjacent the inlet end 20 being connected to th the outlet end 21`beingconnected to the inlet end of the pipe 18, and it comprises a Vertical pipe 22 leading from the mlet end 20 'ofT-'thecoil directly to the lower part of the compartment 11, a'pipe 23 inclu sev;

21 of the coil.

of any desired construction. The' the outlet end of the condenser 16, and i ei'al loops forming an inclosure 724 for an ice making pan 25, and a pipe 26 including .several loops'extending upwai'dly from one of'th'e loops of the 'pipe 23 to the outlet end 00 It will be understood that a ,suitable refrigerant, such as sulfurous acid (S02) is used and, being compressed by the compressor 13, it is passed `through the cooler or condenser 16 and expanded through the valve 17 into the coil 19. It returns to the compressor thiough the pipe 18. ri`hus the coldest parts of the coil ,19 are the pipes 22 and 23, the pipe 26 getting relatively warmer as the top of the coil is reached. By this arrangement of the coil 19 water in the pan 25 is more quickly formed into ice than when the coil is looped from 'the top downwardly, and the air circulating through the coil, from the top toward the bottom of course, Strikes the relatively warmer pipe first and the coldest pipe last, thus Operating most eficiently.

-Should the form of refrigerant used or the size of pipiiig employed make it diflicult to pump the refrigerant from the hottom of the coil indirectly through the several loops ,as illustrated in Fig. 1, another form of the pipe 23 to the upper part of the compartment, a pipe 26a including several loops extending from the upper to the lower part of the compartment, and a third Vertical pipe 28 extending from one of the lower loops of the pipe 26a to the outlet .end `of the. coil. With this coil construction there is a direct pull through the pipe 28 from the lowermostloop of the pipe 26"and no trouble is experienced in raising the refrigerant. At the same 'time the colder part of the coil is used for ice making and the air .passes overthe ice making loops last.

Other forms may be made without depart- -mg pressor and condenser, comprising' a pipe refrigerating coil entering and leavin said extending downwardly from its inlet end compartmentadjacent the top thereo said pipingconnected to said downwardly eX- coil comprising a pipe leading from its inlet 55 tending pipe vand `forming an inclosure for directly to the lower part of said compartan ice making pan, and a pipe formcd in a ment, said pipe .there forming several loops w plurality of loops from said piping to the around a space for an ice making pan and outlet end of said coil. w then leading upwardly in theform of addi- 2. In a refrigerating apparatus, the comtionalloops to the outlet end of said coil. 60 bination with a compressor, and a condenser, 7. 'I`he combination with a refrigerator of an expansion coil connected to said comhaving a compartment, of a refrigerating pressor and condenser, comprising a pipe coil in said compartment comprising a ver-- extending downwardly from its inlet end tical pipe extending from the inlet end of piping connected to said downwardly exsaid'coil vto the lower part of said compart- 65 tending pipe and formingv an inclosure for ment, a pipe including several loops forman ice making pan, and a pipe formed in a ving an inclosure foran ice making pan and plurality of loops-reaching upwardly from a pipe including several loops extending- "said piping to the outlet end of said coil. from the lower part to the upper `part of said 3. In a refrigerating apparatus, the com-` compartment. 'w bination with 'a refrigerator having a com- 8. The combination with a refrigerator partment, a compressor and a condenser, of having a compartment,-v of a refrigerating a refrigerating 'coil in said compartment coil in said compartment comprising a vertip connected to said compressor and condenser cal 'pipe extending from the inlet end 01 and comprisi'ngpipmg forming an inclosure said coil to the lower part of said' compart- 75.

for an ice maklng pan, and a pipe formed ment, a pipe including several loops form- 'in a plurality of loops or sections extending ing an inclosure for. an'ice making pan, a from said 'piping to the outlet end -of said second verticalpipe extending from one of coil. said loops at the lower part of said com- 4. In a refrigerating apparatus, the compartment to the upper part thereof, a pipe W 'bination lwith a refrigerator havingia comincluding several loops extending `from the '30 partment, a compressor and a condenser, of upper to the lower part of said comparta refrigerating coil vin said compartment ment, and an outlet pipe from the lower connected'to said compressor and condenser end of one of the last said loops. f w and comprising piping forming an inclosure 9. The combination with a refrigerator w* w 'for an ice making pan, said piping being having a compartment, of a refrigerating 85 arranged adjacent the bottom part of said coil in said compartment comprising a vercompartment, and a pipe formed in a plutical pipe extending'from the inlet end of rality of loops or Sections extending upsaid coil to the lower part of saidcompart-` wardly from said piping to the outlet end ment, a pipe including several loopsform- W .of said coil. ing an inclosure for an ice making pan, a 5. The combination with a refrigeratol second Vertical pipe extending from one of having a refrigeratingcompartment, of are- 'said loops at the lower part of said comfrigerating coil entering and leaving said partment to the upper part thereof, a pipe compartment adjaoent the top thereof, said including several loops extending'from the w coil comprising-a pipe leading from its inupper part thereof, a pipe including several 4a let to the lower part of said compartment, a loops extending from the upper to the lower plurality of loops of pipe at the bottom of part of said compartment, and a third versaid compartment forming an inclosure for tical pipe extending from one of the lower an ice making pan, and a plurality of loops said loops to the outlet' end of said 'coil at IW x of pipe between said bottom loops and the the top of'the compartment. i 4 [W outlet end of said coil. In testimony whereof ll affix my signature. 6. The combination with a refrigeratoi 'having a refrigerating compartment, of a MILTON TIBBE'l-TS. 

